
/**
  ******************************************************************************
  * @file           : main.c
  * @brief          : Main program body
  ******************************************************************************
  ** This notice applies to any and all portions of this file
  * that are not between comment pairs USER CODE BEGIN and
  * USER CODE END. Other portions of this file, whether 
  * inserted by the user or by software development tools
  * are owned by their respective copyright owners.
  *
  * COPYRIGHT(c) 2018 STMicroelectronics
  *
  * Redistribution and use in source and binary forms, with or without modification,
  * are permitted provided that the following conditions are met:
  *   1. Redistributions of source code must retain the above copyright notice,
  *      this list of conditions and the following disclaimer.
  *   2. Redistributions in binary form must reproduce the above copyright notice,
  *      this list of conditions and the following disclaimer in the documentation
  *      and/or other materials provided with the distribution.
  *   3. Neither the name of STMicroelectronics nor the names of its contributors
  *      may be used to endorse or promote products derived from this software
  *      without specific prior written permission.
  *
  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
  * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
  * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
  * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
  * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
  * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  *
  ******************************************************************************
  */
/* Includes ------------------------------------------------------------------*/
#include "main.h"
#include "usart.h"
#include "gpio.h"

/* USER CODE BEGIN Includes */
#include "userflash.h"
#include "iap.h"
/* USER CODE END Includes */

/* Private variables ---------------------------------------------------------*/

/* USER CODE BEGIN PV */
/* Private variables ---------------------------------------------------------*/
typedef  void (*pFunction)(void);
pFunction Jump_To_Application;
uint32_t JumpAddress;
/* USER CODE END PV */

/* Private function prototypes -----------------------------------------------*/
static void LL_Init(void);
void SystemClock_Config(void);

/* USER CODE BEGIN PFP */
/* Private function prototypes -----------------------------------------------*/
__align(2) uint8_t buf[128];
/* USER CODE END PFP */

/* USER CODE BEGIN 0 */

/* USER CODE END 0 */

/**
  * @brief  The application entry point.
  *
  * @retval None
  */
int main(void)
{
  /* USER CODE BEGIN 1 */
	uint8_t ch;
	uint8_t buf[10]={0,1,2,3,4,5,6,7,8,9};
  /* USER CODE END 1 */

  /* MCU Configuration----------------------------------------------------------*/

  /* Reset of all peripherals, Initializes the Flash interface and the Systick. */
  LL_Init();

  /* USER CODE BEGIN Init */

  /* USER CODE END Init */

  /* Configure the system clock */
  SystemClock_Config();

  /* USER CODE BEGIN SysInit */

  /* USER CODE END SysInit */

  /* Initialize all configured peripherals */
  MX_GPIO_Init();
  MX_USART1_UART_Init();
  /* USER CODE BEGIN 2 */
	LL_mDelay(10);
	userUartInit();
	
	if(*(__IO uint16_t*)UPDATA_FLAG_ADD==0X1234)    //检查是否有需要更新标志
	{
		startIap(); 
	}
	
	LL_GPIO_DeInit(GPIOA);
	LL_USART_DeInit(USART1);
	
	/* Test if user code is programmed starting from address "APPLICATION_ADDRESS" */
	if (((*(__IO uint32_t*)APP_ADD) & 0x2FFE0000 ) == 0x20000000)
	{ 
		/* Jump to user application */
		JumpAddress = *(__IO uint32_t*) (APP_ADD + 4);
		Jump_To_Application = (pFunction) JumpAddress;
		
		/* Initialize user application's Stack Pointer */
		__set_MSP(*(__IO uint32_t*) APP_ADD);
		
		/* Jump to application */
		Jump_To_Application();	
	}
	else
	{
		startIap();  
	}
  /* USER CODE END 2 */

  /* Infinite loop */
  /* USER CODE BEGIN WHILE */
  while (1)
  {
//		if(receiveOneByte(&ch))
//		{
//			LL_GPIO_TogglePin(GPIOA,LL_GPIO_PIN_4);
//			LL_USART_TransmitData8(USART1,ch);
//		} 
		
		
//		LL_mDelay(1000); 
  /* USER CODE END WHILE */

  /* USER CODE BEGIN 3 */

  }
  /* USER CODE END 3 */

}

static void LL_Init(void)
{
  

  LL_APB1_GRP2_EnableClock(LL_APB1_GRP2_PERIPH_SYSCFG);
  LL_APB1_GRP1_EnableClock(LL_APB1_GRP1_PERIPH_PWR);

  /* System interrupt init*/
  /* SVC_IRQn interrupt configuration */
  NVIC_SetPriority(SVC_IRQn, 0);
  /* PendSV_IRQn interrupt configuration */
  NVIC_SetPriority(PendSV_IRQn, 0);
  /* SysTick_IRQn interrupt configuration */
  NVIC_SetPriority(SysTick_IRQn, 0);

}

/**
  * @brief System Clock Configuration
  * @retval None
  */
void SystemClock_Config(void)
{

  LL_FLASH_SetLatency(LL_FLASH_LATENCY_0);

  if(LL_FLASH_GetLatency() != LL_FLASH_LATENCY_0)
  {
  Error_Handler();  
  }
  LL_RCC_HSI_Enable();

   /* Wait till HSI is ready */
  while(LL_RCC_HSI_IsReady() != 1)
  {
    
  }
  LL_RCC_HSI_SetCalibTrimming(16);

  LL_RCC_SetAHBPrescaler(LL_RCC_SYSCLK_DIV_1);

  LL_RCC_SetAPB1Prescaler(LL_RCC_APB1_DIV_1);

  LL_RCC_SetSysClkSource(LL_RCC_SYS_CLKSOURCE_HSI);

   /* Wait till System clock is ready */
  while(LL_RCC_GetSysClkSource() != LL_RCC_SYS_CLKSOURCE_STATUS_HSI)
  {
  
  }
  LL_Init1msTick(8000000);

  LL_SYSTICK_SetClkSource(LL_SYSTICK_CLKSOURCE_HCLK);

  LL_SetSystemCoreClock(8000000);

  LL_RCC_SetUSARTClockSource(LL_RCC_USART1_CLKSOURCE_PCLK1);

  /* SysTick_IRQn interrupt configuration */
  NVIC_SetPriority(SysTick_IRQn, 0);
}

/* USER CODE BEGIN 4 */

/* USER CODE END 4 */

/**
  * @brief  This function is executed in case of error occurrence.
  * @param  file: The file name as string.
  * @param  line: The line in file as a number.
  * @retval None
  */
void _Error_Handler(char *file, int line)
{
  /* USER CODE BEGIN Error_Handler_Debug */
  /* User can add his own implementation to report the HAL error return state */
  while(1)
  {
  }
  /* USER CODE END Error_Handler_Debug */
}

#ifdef  USE_FULL_ASSERT
/**
  * @brief  Reports the name of the source file and the source line number
  *         where the assert_param error has occurred.
  * @param  file: pointer to the source file name
  * @param  line: assert_param error line source number
  * @retval None
  */
void assert_failed(uint8_t* file, uint32_t line)
{ 
  /* USER CODE BEGIN 6 */
  /* User can add his own implementation to report the file name and line number,
     tex: printf("Wrong parameters value: file %s on line %d\r\n", file, line) */
  /* USER CODE END 6 */
}
#endif /* USE_FULL_ASSERT */

/**
  * @}
  */

/**
  * @}
  */

/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/
